Re: LAN Configuration

<sdortch@xxxxxxxx> wrote in message
news:1136565456.758078.245890@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> I have a network that has slowly grown over time and now seems to need
> to be redesigned.
>
> All of the servers (5) and all of the clients (20) are hanging off of
> hubs. The network would look something like:
>
> Internet
> |
> Siemens se5940 T1 Gateway Router
> |
> 32 port Hub
> |
> -------------------------------------------------------->>
> | | | | | | |
> Svr1 Svr2 etc Hub Hub Client Client
> | |
> ------- -------
> | | | |
> Client Client Client Client
>
> You get the idea.
>
> Anyway, I recently went to add another hub to the 32 port hub. I
> later realized I bought a "Switch". I added it to the network and
> *some* of the clients started experiencing latency.

probably means there is an issue with the device - a switch shouldnt make
for a big degrade in performance, even though all traffic goes intot he hub
segment.
>
> When the switch is unplugged, things go back to normal.
>
> I realize that I could simply return the switch and get a hub, but I
> thought it may be time to reconsider the entire design. I do see ALOT
> of collisions on the 32 port hub. My background is in database design
> and programming, not network design so I thought maybe I could enlist
> the help of some experts such as yourselves.

every network has bottlenecks - it sounds like yours is the shared 10M
Ethernet in all the hubs at the moment.

however, the practical limit for the servers and clients you have is
probably the connections to the servers - so you need to improve the
capacity into the servers.

put a 10/100 switch in the centre of the network.
connect each hub to the switch on a separate port.
connect the servers on dedicated switch ports, and make sure they connect at
100 rather than 10 - if you dont have enough spare switch ports, then choose
the servers with the highest traffic usage 1st.
>
> Any suggestions would be appreciated.
>
--
Regards

stephen_hope@xxxxxxxxxxxx - replace xyz with ntl


.

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